CN108556314A - A kind of upper cooling device and method for plastic suction forming apparatus - Google Patents
A kind of upper cooling device and method for plastic suction forming apparatus Download PDFInfo
- Publication number
- CN108556314A CN108556314A CN201810603775.6A CN201810603775A CN108556314A CN 108556314 A CN108556314 A CN 108556314A CN 201810603775 A CN201810603775 A CN 201810603775A CN 108556314 A CN108556314 A CN 108556314A
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- Prior art keywords
- upper cover
- mold
- chassis
- forming apparatus
- nitrogen
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of upper cooling devices for plastic suction forming apparatus,The plastic suction forming apparatus includes oven and vacuum pump,The outlet of the oven is equipped with rack,The rack is equipped with chassis,It is fixed with mold on the chassis,Stomata is offered in the mold,One end of the stomata extends to the surface of the mold,The other end of the stomata is communicated in the vacuum pump,The top on the chassis is equipped with downward opening upper cover,The elevating mechanism for driving the upper cover to rise or decline is fixed in the rack,The upper cover is equipped with nitrogen interface,The upper cooling device includes liquid nitrogen container,It is connected to by a nitrogen transfer conduit between the liquid nitrogen container and nitrogen interface,The nitrogen transfer conduit is equipped with a valve,When opening the valve,Nitrogen is delivered in the upper cover by the liquid nitrogen container,For the workpiece cooling on the mold.The present invention can reduce the temperature difference of workpiece upper and lower surface and improve workpiece cooling efficiency.
Description
Technical field
The present invention relates to plastic suction forming apparatus more particularly to a kind of upper cooling devices and method for plastic suction forming apparatus.
Background technology
Plastic suction forming apparatus in the market can be put to make Blister product have the briquetting pressure of bigger after plastic uptake material is heated
It is placed in vacuum forming region, which need to seal a cover, by making heated rear material vacuum molding to mold chassis air-breathing,
In order to accelerate the cooling to material, cold and hot friendship can be carried out with plastic uptake material with cold water circulation in mold chassis design cold water channel
It changes, but is not in direct contact with material surface due to being placed on the cover above material, the method that cold water cannot be used to cool down.Therefore
Often in the thick workpiece of processing, the cooling of lower mold cannot effectively cool down workpiece surface, need to wait for longer
Time make workpiece upper surface cool down after, mold can be detached with workpiece, otherwise the upper and lower surface temperature difference of workpiece compared with
If can gross distortion by mold separation, plastic uptake workpiece when big.
Invention content
The technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, providing one kind can be reduced on workpiece
The temperature difference of lower surface, the upper cooling device and method for plastic suction forming apparatus for improving workpiece cooling efficiency.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of upper cooling device for plastic suction forming apparatus, the plastic suction forming apparatus include oven and vacuum pump, described
The outlet of oven is equipped with rack, and the rack is equipped with chassis, is fixed with mold on the chassis, gas is offered in the mold
Hole, one end of the stomata extend to the surface of the mold, and the other end of the stomata is communicated in the vacuum pump, the bottom
The top of disk is equipped with downward opening upper cover, and the lifting for driving the upper cover to rise or decline is fixed in the rack
Mechanism, the upper cover are equipped with nitrogen interface, and the upper cooling device includes liquid nitrogen container, the liquid nitrogen container and nitrogen interface it
Between by a nitrogen transfer conduit be connected to, the nitrogen transfer conduit be equipped with a valve, when opening the valve, the liquid nitrogen
Nitrogen is delivered in the upper cover by tank, for the workpiece cooling on the mold.
Preferably, the upper cover is equipped with air pressure interface, and the upper cooling device includes air compressor machine, and the air compressor machine connects
The air pressure interface is passed through, it is described used for air compressor in the gas boosting in upper cover.
Preferably, further include having circulating chilled water machine, cooling duct, the both ends of the cooling duct are offered in the chassis
It is respectively communicated in circulating chilled water machine, the circulating chilled water machine is for driving cold water to be flowed in cooling duct, to enable the chassis
Cooling.
Preferably, the valve is solenoid valve.
Preferably, the elevating mechanism is cylinder.
A kind of upper cooling means for plastic suction forming apparatus, this method be based on one on cooling device realize, the plastic uptake at
Type machine includes oven and vacuum pump, and the outlet of the oven is equipped with rack, and the rack is equipped with chassis, consolidates on the chassis
Surely have mold, offer stomata in the mold, one end of the stomata extends to the surface of the mold, the stomata it is another
One end is communicated in the vacuum pump, and the top on the chassis is equipped with downward opening upper cover, is fixed in the rack for driving
The elevating mechanism for making the upper cover rise or decline, the upper cover are equipped with nitrogen interface, and the upper cooling device includes
Liquid nitrogen container is connected between the liquid nitrogen container and nitrogen interface by a nitrogen transfer conduit, and the nitrogen transfer conduit is equipped with
One valve, the method includes having the following steps：Step S1, the mould in plastic uptake transmission of materials to chassis that the oven exports
Tool；Step S2, the elevating mechanism drive upper cover to decline, until upper cover is contacted with chassis, and upper cover covers at mold, by true
Sky pump applies negative pressure to the stomata in mold, to enable plastic uptake material form workpiece on mold；Step S3 opens the valve,
Nitrogen is delivered in the upper cover by the liquid nitrogen container by nitrogen transfer conduit；Step S4, by the nitrogen in the upper cover
Workpiece on the mold is cooled down.
Preferably, the upper cover is equipped with air pressure interface, and the upper cooling device includes air compressor machine, and the air compressor machine connects
The air pressure interface is passed through, in the step S2, while the vacuum pump applies negative pressure to the stomata in mold, using described
Air compressor machine is to the gas boosting in upper cover.
Preferably, the plastic suction forming apparatus further includes having circulating chilled water machine, and cooling duct is offered in the chassis, described
The both ends of cooling duct are respectively communicated in circulating chilled water machine, drive cold water to be flowed in cooling duct using the circulating chilled water machine
It is dynamic, to enable the chassis cool down.
Preferably, the valve is solenoid valve, in the step S3, by loading electric signal to the valve to control
Valve is stated to open or turn off.
Preferably, the elevating mechanism is cylinder, in the step S2, is driven by loading air pressure to the elevating mechanism
The upper cover is set to rise or decline.
Upper cooling device disclosed by the invention for plastic suction forming apparatus, when processing, the plastic uptake material that first exports oven
It is transmitted to the mold on chassis by transport mechanism, drives upper cover to decline using elevating mechanism later, until upper cover connects with chassis
It touches, while ensureing that upper cover covers at mold, then negative pressure is applied to the stomata in mold by vacuum pump so that plastic uptake material is in mould
Workpiece is formed on tool, and cooling ring section is entered after machine-shaping, first opens the valve, the liquid nitrogen container passes through nitrogen transfer conduit
Nitrogen is delivered in the upper cover, finally the workpiece on the mold is cooled down using the nitrogen in upper cover.Based on upper
Principle is stated, the present invention, which realizes, is quickly cooled down workpiece surface, contributes to the temperature difference for reducing workpiece upper and lower surface, same to phase
For the mode of workpiece surface natural heat dissipation, the present invention also substantially increases cooling velocity, helps to improve production, processing
Efficiency shortens production cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of plastic suction forming apparatus.
Fig. 2 is the structure chart of upper cover and chassis portion.
Specific implementation mode
The present invention is described in more detail with reference to the accompanying drawings and examples.
The invention discloses a kind of upper cooling devices for plastic suction forming apparatus, in conjunction with shown in Fig. 1 and Fig. 2, the plastic uptake
Molding machine includes oven 1 and vacuum pump 6, and the outlet of the oven 1 is equipped with rack 2, and the rack 2 is equipped with chassis 3, described
It is fixed with mold 4 on chassis 3, stomata is offered in the mold 4, one end of the stomata extends to the surface of the mold 4,
The other end of the stomata is communicated in the vacuum pump 6, and the top on the chassis 3 is equipped with downward opening upper cover 7, the rack
The elevating mechanism 8 for driving the upper cover 7 to rise or decline is fixed on 2, the upper cover 7 is equipped with nitrogen interface 70,
The upper cooling device includes liquid nitrogen container 9, is connected by a nitrogen transfer conduit 10 between the liquid nitrogen container 9 and nitrogen interface 70
Logical, the nitrogen transfer conduit 10 is equipped with a valve 11, and when opening the valve 11, nitrogen is delivered to by the liquid nitrogen container 9
In the upper cover 7, for the workpiece cooling on the mold 4.
In above structure, when processing, first the plastic uptake material that oven 1 exports is transmitted to by transport mechanism on chassis 3
Mold 4 drives upper cover 7 to decline using elevating mechanism 8 later, until upper cover 7 is contacted with chassis 3, while ensureing that upper cover 7 covers at
Mold 4, then negative pressure is applied to the stomata in mold 4 by vacuum pump 6 so that plastic uptake material forms workpiece on mold 4, processing
Enter cooling ring section after molding, first opens the valve 11, nitrogen is delivered to by the liquid nitrogen container 9 by nitrogen transfer conduit 10
In the upper cover 7, finally the workpiece on the mold 4 is cooled down using the nitrogen in upper cover 7.Based on above-mentioned principle, originally
Invention, which realizes, is quickly cooled down workpiece surface, contributes to the temperature difference for reducing workpiece upper and lower surface, while compared on workpiece
For the mode of surface natural heat dissipation, the present invention also substantially increases cooling velocity, helps to improve production, processing efficiency, contracting
Short production cost.
In order to enable plastic uptake material to be preferably adsorbed in mold 4, and the molding effect of raising workpiece, the present embodiment
In, the upper cover 7 is equipped with air pressure interface 71, and the upper cooling device includes air compressor machine 12, and the air compressor machine 12 is communicated in
The air pressure interface 71, the air compressor machine 12 are used for the gas boosting in upper cover 7.
The present embodiment further includes having circulating chilled water machine 13 as a preferred method, is offered in the chassis 3 cooling logical
The both ends in road, the cooling duct are respectively communicated in circulating chilled water machine 13, and the circulating chilled water machine 13 is for driving cold water cold
But it is flowed in channel, to enable the chassis 3 cool down.
Further, the valve 11 is solenoid valve.The elevating mechanism 8 is cylinder.
Upper cooling device disclosed by the invention further relates in actual application a kind of for the upper cold of plastic suction forming apparatus
But method, this method are based on cooling device on one and realize that the plastic suction forming apparatus includes oven 1 and vacuum pump 6, the oven
1 outlet is equipped with rack 2, and the rack 2 is equipped with chassis 3, is fixed with mold 4 on the chassis 3, is opened up in the mold 4
There are stomata, one end of the stomata to extend to the surface of the mold 4, the other end of the stomata is communicated in the vacuum pump 6,
The top on the chassis 3 is equipped with downward opening upper cover 7, be fixed in the rack 2 for drive the upper cover 7 rise or
The elevating mechanism 8 of decline, the upper cover 7 are equipped with nitrogen interface 70, and the upper cooling device includes liquid nitrogen container 9, the liquid
It is connected to by a nitrogen transfer conduit 10 between nitrogen tank 9 and nitrogen interface 70, the nitrogen transfer conduit 10 is equipped with a valve
11, the method includes having the following steps：
Step S1, the mold 4 in plastic uptake transmission of materials to chassis 3 that the oven 1 exports；
Step S2, the elevating mechanism 8 drive upper cover 7 to decline, until upper cover 7 is contacted with chassis 3, and upper cover 7 covers at
Mold 4 applies negative pressure, to enable plastic uptake material form workpiece on mold 4 by vacuum pump 6 to the stomata in mold 4；
Step S3, opens the valve 11, and nitrogen is delivered on described by the liquid nitrogen container 9 by nitrogen transfer conduit 10
In cover 7；
Step S4 cools down the workpiece on the mold 4 by the nitrogen in the upper cover 7.
As further expansion scheme, the upper cover 7 is equipped with air pressure interface 71, and the upper cooling device includes free
Press 12, the air compressor machine 12 are communicated in the air pressure interface 71, and in the step S2, the vacuum pump 6 is to the gas in mold 4
While hole applies negative pressure, using the air compressor machine 12 to the gas boosting in upper cover 7.
In the present embodiment, the plastic suction forming apparatus further includes having circulating chilled water machine 13, is offered in the chassis 3 cooling logical
The both ends in road, the cooling duct are respectively communicated in circulating chilled water machine 13, drive cold water cold using the circulating chilled water machine 13
But it is flowed in channel, to enable the chassis 3 cool down.
The valve 11 is solenoid valve as a preferred method, in the step S3, by being loaded to the valve 11
Electric signal is opened or is turned off to control the valve 11.
In addition, the elevating mechanism 8 is cylinder, in the step S2, driven by loading air pressure to the elevating mechanism 8
The upper cover 7 is set to rise or decline.
Upper cooling device and method disclosed by the invention for plastic suction forming apparatus preferably uses nitrogen to carry out workpiece
Upper cooling, wherein liquid nitrogen are a kind of with inert, colourless, odorless, non-corrosive, nontoxic, non-combustible, the extremely low gas of temperature
Body, the present invention use liquid nitrogen holding vessel, are filled to the upper cover of plastic suction forming apparatus and add nitrogen, and utilize solenoid valve control nitrogen access
Switch, after plastic uptake material is shaped to workpiece, control solenoid valve open, nitrogen enters inside cover, to the work inside cover
Part upper surface carries out quick-cooling, heating exchange, and after the completion of cooling, solenoid valve is closed, and cover is opened, at this time workpiece can break away from moulds, base
In the above process, the cooling efficiency of workpiece after thermoforming is substantially increased.
The above is preferred embodiments of the present invention, is not intended to restrict the invention, all technology models in the present invention
Interior done modification, equivalent replacement or improvement etc. are enclosed, should be included in the range of of the invention protect.
Claims (10)
1. a kind of upper cooling device for plastic suction forming apparatus, which is characterized in that the plastic suction forming apparatus include oven (1) and
The outlet of vacuum pump (6), the oven (1) is equipped with rack (2), and the rack (2) is equipped with chassis (3), on the chassis (3)
It is fixed with mold (4), stomata is offered in the mold (4), one end of the stomata extends to the surface of the mold (4),
The other end of the stomata is communicated in the vacuum pump (6), and the top of the chassis (3) is equipped with downward opening upper cover (7), institute
The elevating mechanism (8) being fixed in rack (2) for driving the upper cover (7) to rise or decline is stated, is set on the upper cover (7)
It includes liquid nitrogen container (9) to have nitrogen interface (70), the upper cooling device, between the liquid nitrogen container (9) and nitrogen interface (70)
It is connected to by a nitrogen transfer conduit (10), the nitrogen transfer conduit (10) is equipped with a valve (11), opens the valve
(11) when, nitrogen is delivered in the upper cover (7) by the liquid nitrogen container (9), for the workpiece cooling on the mold (4).
2. being used for the upper cooling device of plastic suction forming apparatus as described in claim 1, which is characterized in that set on the upper cover (7)
It includes air compressor machine (12) to have air pressure interface (71), the upper cooling device, and the air compressor machine (12) is communicated in the air pressure and connects
Mouth (71), the air compressor machine (12) are used for the gas boosting in upper cover (7).
3. being used for the upper cooling device of plastic suction forming apparatus as described in claim 1, which is characterized in that further include having circulating chilled water
Machine (13), the chassis (3) is interior to offer cooling duct, and the both ends of the cooling duct are respectively communicated in circulating chilled water machine
(13), the circulating chilled water machine (13) is for driving cold water to be flowed in cooling duct, to enable the chassis (3) cool down.
4. being used for the upper cooling device of plastic suction forming apparatus as described in claim 1, which is characterized in that the valve (11) is electricity
Magnet valve.
5. being used for the upper cooling device of plastic suction forming apparatus as described in claim 1, which is characterized in that the elevating mechanism (8)
For cylinder.
6. a kind of upper cooling means for plastic suction forming apparatus, which is characterized in that this method is based on cooling device on one and realizes, institute
It includes oven (1) and vacuum pump (6) to state plastic suction forming apparatus, and the outlet of the oven (1) is equipped with rack (2), the rack (2)
It is equipped with chassis (3), mold (4) is fixed on the chassis (3), offer stomata in the mold (4), the one of the stomata
End extends to the surfaces of the mold (4), and the other end of the stomata is communicated in the vacuum pump (6), the chassis (3) it is upper
Side is equipped with downward opening upper cover (7), is fixed on the rack (2) for driving the upper cover (7) to rise or decline
Elevating mechanism (8), the upper cover (7) are equipped with nitrogen interface (70), and the upper cooling device includes liquid nitrogen container (9), described
It is connected to by a nitrogen transfer conduit (10) between liquid nitrogen container (9) and nitrogen interface (70), on the nitrogen transfer conduit (10)
Equipped with a valve (11), the method includes having the following steps：
Step S1, the mold (4) in plastic uptake transmission of materials to chassis (3) that the oven (1) exports；
Step S2, the elevating mechanism (8) drive upper cover (7) to decline, until upper cover (7) is contacted with chassis (3), and upper cover (7)
Mold (4) is covered at, negative pressure is applied to the stomata in mold (4) by vacuum pump (6), to enable plastic uptake material on mold (4)
Form workpiece；
Step S3, opens the valve (11), and nitrogen is delivered to described by the liquid nitrogen container (9) by nitrogen transfer conduit (10)
In upper cover (7)；
Step S4 cools down the workpiece on the mold (4) by the nitrogen in the upper cover (7).
7. being used for the upper cooling means of plastic suction forming apparatus as claimed in claim 6, which is characterized in that set on the upper cover (7)
It includes air compressor machine (12) to have air pressure interface (71), the upper cooling device, and the air compressor machine (12) is communicated in the air pressure and connects
Mouthful (71) in the step S2, while the vacuum pump (6) applies negative pressure to the stomata in mold (4), utilize the pneumatics
Machine (12) is to the gas boosting in upper cover (7).
8. being used for the upper cooling means of plastic suction forming apparatus as claimed in claim 6, which is characterized in that the plastic suction forming apparatus is also
Include circulating chilled water machine (13), offer cooling duct in the chassis (3), the both ends of the cooling duct be respectively communicated in
Circulating chilled water machine (13) drives cold water to be flowed in cooling duct, to enable the chassis (3) using the circulating chilled water machine (13)
Cooling.
9. being used for the upper cooling means of plastic suction forming apparatus as claimed in claim 6, which is characterized in that the valve (11) is electricity
Magnet valve in the step S3, is opened or shutdown by loading electric signal to the valve (11) with controlling the valve (11).
10. being used for the upper cooling means of plastic suction forming apparatus as claimed in claim 6, which is characterized in that the elevating mechanism (8)
For cylinder, in the step S2, driven by loading air pressure to the elevating mechanism (8) upper cover (7) rise or under
Drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603775.6A CN108556314A (en) | 2018-06-12 | 2018-06-12 | A kind of upper cooling device and method for plastic suction forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603775.6A CN108556314A (en) | 2018-06-12 | 2018-06-12 | A kind of upper cooling device and method for plastic suction forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108556314A true CN108556314A (en) | 2018-09-21 |
Family
ID=63553604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810603775.6A Pending CN108556314A (en) | 2018-06-12 | 2018-06-12 | A kind of upper cooling device and method for plastic suction forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108556314A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2417378A1 (en) * | 1978-02-21 | 1979-09-14 | Sacic | Press tools for gripping, moulding and chilling thermoplastic sheet - for efficient shaping of thermoplastic car carpeting etc. |
| CN206749025U (en) * | 2017-03-29 | 2017-12-15 | 深圳富勒工业有限公司 | A kind of excellent plastic-suction forming equipment of cooling performance |
| CN208428642U (en) * | 2018-06-12 | 2019-01-25 | 深圳富勒工业有限公司 | A kind of upper cooling device for plastic suction forming apparatus |
-
2018
- 2018-06-12 CN CN201810603775.6A patent/CN108556314A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2417378A1 (en) * | 1978-02-21 | 1979-09-14 | Sacic | Press tools for gripping, moulding and chilling thermoplastic sheet - for efficient shaping of thermoplastic car carpeting etc. |
| CN206749025U (en) * | 2017-03-29 | 2017-12-15 | 深圳富勒工业有限公司 | A kind of excellent plastic-suction forming equipment of cooling performance |
| CN208428642U (en) * | 2018-06-12 | 2019-01-25 | 深圳富勒工业有限公司 | A kind of upper cooling device for plastic suction forming apparatus |
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